As a natural and healthy humidification method, wet membrane humidifiers achieve air humidification through the natural 

evaporation of water, avoiding secondary pollution issues caused by mist. They are increasingly favored by households, offices, 

and industrial users. However, faced with the vast array of products on the market, how do you select a wet membrane 

humidifier that truly meets your needs? This article provides a comprehensive buying guide by focusing on core specifications.

Core Specification Analysis

1. Humidification Capacity

Humidification capacity is the core metric for evaluating humidifier performance, typically measured in “milliliters per hour” 

or “liters per day.” It directly determines how much moisture the device can add to the air within a given timeframe.

Selection Tip: Consider the dryness of your environment, room volume, and ventilation conditions. Generally, aim for 

10-15 ml/h per square meter of space. Increase this standard in dry northern regions or during winter heating periods.

2. Humidifying Pad Material

The humidifying pad is the core component, directly impacting efficiency, lifespan, and hygiene.

Common Types:

• Inorganic Wet Membrane: Highly durable with excellent antibacterial properties, but higher cost

• Organic Wet Membrane: Strong water absorption and high humidification efficiency, requires regular replacement

• Composite Material: Balances performance and cost, currently the mainstream choice

Selection Advice: Prioritize products with antibacterial and anti-mold treatment, especially if there are susceptible individuals 

in the household. Check the replacement cycle and cost of the wet membrane, factoring it into the long-term usage budget.

3. Airflow and Circulation Efficiency

Airflow determines the humidifier's capacity to push air through the humidification membrane, directly affecting humidification 

uniformity and speed.

Key metric: CADR (Clean Air Delivery Rate) value, measuring the volume of humidified air output per hour.

Selection advice: Larger spaces require higher airflow. Open layouts demand superior circulation efficiency to ensure even 

humidification.

4. Recommended Coverage Area

Manufacturers' stated coverage areas are theoretical values based on standard conditions (e.g., 2.8m ceiling height, sealed 

environment).

Practical Considerations: Adjust based on actual room height, furniture density, and door/window sealing. Add 20%-30% 

to the manufacturer's recommended area to ensure coverage during extreme dry conditions.

5. Energy Consumption & Operating Costs

Energy consumption in wet-membrane humidifiers primarily stems from the fan and water circulation system.

• Energy Efficiency Ratio: Focus on the “humidification output/power consumption” ratio—higher values indicate

  better efficiency.

• Operating Costs: Beyond electricity consumption, factor in wet-membrane replacement, regular cleaning/maintenance,

  and potential water treatment expenses.

• Selection Recommendations: Commercial/industrial applications should prioritize long-term operating costs, while

  residential users may balance initial investment with energy efficiency.

Selecting Models by Application Scenario

Residential Environments

Key Requirements: Quiet operation, aesthetic design, user-friendly controls, safety and reliability

Critical Parameters:

• Humidification Capacity: 300-500ml/h recommended for 20-30m² living rooms

• Noise Level: Below 35dB for nighttime use

• Safety Features: Automatic power-off and dry-run protection

• Additional Functions: Automatic humidity control, timer settings

Offices and Commercial Spaces

Key Requirements: Even humidification, accommodates multiple users, does not disrupt normal operations

Key Parameters:

• Humidification Capacity: Calculate total demand based on 10-15 square meters per person

• Airflow Distribution: Ensures balanced humidity across all areas

• Intelligence: Supports centralized control, automatically adjusts during working hours

• Maintenance Convenience: Easy to clean quickly, minimizes disruption to work

Industrial Plants and Special Environments

Key Requirements: High humidification capacity, continuous operation, adapts to complex environments

Key Parameters:

• Humidification Capacity: Precisely calculated based on space volume and process requirements

• Durability: Withstands temperature/humidity fluctuations and dusty industrial conditions

• Scalability: Modular design facilitates future expansion

• Water Quality Adaptability: Anti-scaling design required for hard water regions

  
  

Common Selection Pitfalls

• Overemphasizing high humidification capacity: Excessive output wastes energy and may cause humidity spikes, leading to

  mold growth and furniture damage. Tailor the system to actual needs.

• Overlooking humidifier membrane maintenance costs: As a consumable, membranes require regular replacement. When

  purchasing, evaluate not only the unit price but also the frequency and cost of membrane replacements over the long term.

• Neglecting environmental adaptability: Water hardness varies significantly by region. In hard water areas, choose models

  with superior anti-scaling design or consider pairing with water treatment equipment.

• Focusing solely on humidification: Modern humidifiers often integrate air purification and sterilization functions. Selecting

  appropriate feature combinations based on the usage environment can enhance overall air quality.

• Underestimating noise impact: Especially in bedrooms or quiet office settings, operating noise directly affects user experience.

  Always check noise levels across different settings.

Comprehensive Selection Strategy

When choosing a humidifier, follow these steps:

• Assess needs: Identify primary usage scenarios, space size, usage frequency, and special requirements.

• Calculate parameters: Determine required humidification capacity based on space size and dryness level, allowing for

  appropriate margin.

• Compare core components: Focus on humidification membrane material, fan construction, and control system quality.

• Consider long-term costs: Evaluate equipment price, energy consumption, and maintenance/replacement expenses holistically.

• Verify Performance: If possible, test the unit beforehand or reference user experiences in similar environments

As a healthy, natural humidification method, wet membrane humidifiers are increasingly becoming essential equipment for improving 

indoor air quality. By scientifically understanding the meaning of each parameter and combining it with your actual usage scenario, 

you will surely select an ideal model that meets your needs while being economical and practical, creating a more comfortable and 

healthy living and working environment for yourself and others.